Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
20004excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17006excellentexcellent11excellent
16004excellentexcellent11excellent
150057goodexcellent11excellent
14008excellentexcellent11excellent
130074lightly pollutedexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10004excellentexcellent11excellent
09006excellentexcellent11excellent
080012excellentexcellent21excellent
07009excellentexcellent11excellent
06007excellentexcellent11excellent
05006excellentexcellent11excellent
04006excellentexcellent11excellent
03007excellentexcellent11excellent
02006excellentexcellent11excellent
01007excellentexcellent11excellent
00006excellentexcellent11excellent
23007excellentexcellent11excellent
22007excellentexcellent11excellent
21004excellentexcellent11excellent